What is a Bill of Lading (BL)?

The BL is the most important document in maritime transport. It serves three functions: cargo receipt, contract of carriage and document of title. Without a BL, there is no customs release at destination.

What's the difference between BL and Sea Waybill?

The BL is negotiable and works as document of title. The Sea Waybill is NOT negotiable: cargo is released to the consignee without presenting the document.

What is House BL vs Master BL?

The Master BL is issued by the carrier to the freight forwarder. The House BL is issued by the forwarder to the final customer. In consolidated operations, you receive an HBL.

What is a Telex Release?

Electronic release of the BL. The carrier electronically transmits authorization to release the cargo to the consignee without requiring the physical BL.

How do you read a Bill of Lading?

Key fields: Shipper, Consignee, Notify Party, Vessel/Voyage, Port of Loading/Discharge, Description of Goods, Number of Packages, Gross Weight, Measurement, Freight Terms and B/L Number.

What happens if I lose the original BL?

Notify the carrier, issue a sworn declaration of loss, present a Letter of Indemnity (bank guarantee). It is slow — many prefer Telex Release for that reason.

When is the BL issued?

After loading the cargo on board the vessel ("Shipped on Board"). The most common for letters of credit is the "On Board" BL.

Bill of Lading (BL): What it is, types and how it works

What is a Bill of Lading?

The Bill of Lading (BL) is the most important document in international maritime transport. Issued by the carrier (or by the freight forwarder in consolidated operations), it serves three simultaneous functions that make it unique among trade documents.

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Cargo receipt

Confirms the carrier received the cargo from the exporter in good condition.

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Contract of carriage

It is proof of the contract between shipper and carrier — route, conditions, freight and responsibilities.

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Document of title

Only the "Original BL" works as document of title: whoever holds it can claim the cargo at destination.

Types of Bill of Lading

Several types exist depending on the nature of the operation, level of trust between parties, and commercial or financial requirements.

Original BL

Original Bill of Lading

Negotiable physical document. Three signed originals. Cargo released against delivery of endorsed original at destination.

When: Letter of credit, transactions where the seller wants payment guarantee before releasing cargo.

Express / Telex

Express Release / Telex Release

Electronic cargo release without physical BL. The carrier authorizes the consignee to pick up.

When: Importers with trusted relationship with exporter. Faster and lower document loss risk.

Sea Waybill

Non-negotiable BL. Cargo is released to consignee without presenting the original document.

When: Intra-group operations, trusted parties, short routes or when no financial instrument is required.

House BL (HBL)

House Bill of Lading

Issued by the freight forwarder or NVOCC. It is the copy the customer receives. Mirrors MBL conditions.

When: When you contract freight through a freight forwarder. Your "commercial" BL.

Master BL (MBL)

Master Bill of Lading

Issued by the carrier to the freight forwarder. It is the "real" BL controlled by the carrier.

When: Runs in parallel with the House BL in consolidated operations.

Switch BL

Switch Bill of Lading

BL issued to replace the original, typically to change shipper, consignee or place of discharge.

When: Triangular operations (re-exports) or when concealing the original supplier.

Clean / Dirty BL

Clean BL vs Dirty (Foul) BL

Clean = no remarks. Dirty/Foul = with damage remarks or discrepancies.

When: "Clean BL" is usually required in letters of credit. A "dirty BL" can block payment.

Key fields of a Bill of Lading

These are the essential fields you will find in any BL:

Field	Meaning
Shipper	Exporter or shipper (who sends the cargo)
Consignee	Consignee / importer (who receives the cargo)
Notify Party	Who to notify when cargo arrives at destination port
Vessel / Voyage	Vessel name and voyage number
Port of Loading	Port of loading (origin)
Port of Discharge	Port of discharge (destination)
Place of Receipt / Delivery	Pickup and delivery place (door to door)
Description of Goods	Detailed description of the goods
Marks & Numbers	Marks and identification numbers of packages
Number of Packages	Number of packages / pieces
Gross Weight	Gross weight in kg
Measurement	Volume in m³ (for LCL)
Freight Terms	Prepaid (paid at origin) / Collect (paid at destination)
B/L Number	Unique document identification number
Signed by	Carrier or agent signature

Bill of Lading vs Air Waybill (AWB)

The air equivalent of the BL is the Air Waybill (AWB). But there are key differences:

Characteristic	Bill of Lading (BL)	Air Waybill (AWB)
Mode	Maritime	Air
Negotiable	Yes (Original BL)	No
Document of title	Yes	No
Cargo receipt	Yes	Yes
Contract of carriage	Yes	Yes
Release at destination	Against delivery of original	Directly to consignee